Stitch-removing tool for welts



May 27, 1924. 1,495.938

P A. WARD STITCH REMOVING TOOL FOR WfiL'lS File d Fab '7, 15.25

If 57. .5. f 10 ,20

r' rvn Inventar;

Paul A. Ward,

per

A ttorzz 5y.

Patented May 27, 1924 UNITED STTS PAUL A. WARD, OF LOS ANGEL-ES, CALIFORNIA.

STITCH-REMOVING TOOL FOR WELTS.

Application filed February 7,1923. Serial No. 617,618.

To all whom it may concern:

Be it known that I, PAUL A. WARD, a citizen of the United States, and a resident of Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Stitch-Removing Tools for Welts, of which the following is a specification.

This invention relates to and has for a main object the provision of an improved, simple, efficient and satisfactory tool adapted for use in connection with shoe re-finishing machinery whereby the welts of shoes, after the soles have been cut therefrom, may be operated upon for the purpose of removing the stitches without impairing the welt or defacing the same in any way, and thus rendering it possible to sew new soles on the old welts by employing the original holes in which the stitches were held.

It is a further object to provide in a tool of the character mentioneda pair of relatively adjustable members, each having a separable disc thereon with peculiarly formed projectionson the adjacent sides of the discs, between which the edge of a welt is adapted to be held while said members are rotated, for the purpose of removing the old stitches from the welt.

Another object is to provide a pair of relatively adjustable members formed of sheet metal and replaceably held on suitable rotating supports, each of said members having a series of projections of different character on the adjacent sides thereof, peculiarly arranged so that the projections on one of said discs will press the welt against the projections on the other disc, and the action of the 'projections on thesecond disc against the side of the welt will serve to knock or displace the stitches from the welt during the rotation of the discs.

Other objects include means for rotatably mounting said members in operative position; means for removably holding said discs in position for use, and means for resiliently mounting one of said discs so as to render the same slightly yieldable relative to the other disc when the normal position relative to the other disc is fixed.

Still other objects may appear as the description progresses.

In the accompanying drawings I have shown one practical embodiment of my invention, subject to modification within the scope of the appendediclaims without departing from the spirit thereof.

In said drawings: v Fig. 1 is a' side elevation of my improved tool, partly in section, on line-1-1 of Fig. 2. Fig. 2 is a face View of the left hand disc shown in Fig. 1. H p

Fig. 3 is a face view of the right hand disc shown in Fig. 1. ,7 1 Fig.4 is a section of the left hand disc on line 4-4 ofFig. 2; and j Fig. 5 is a section of the right handdisc on line 55 of Fig. 3. q

*It will be understood at the outset, that the tool shown in the drawings and to be hereinafter describedis adapted to be mounted on a spindle S such as is used in all standard shoe re-finishing machinery, and the tool proper embodies two main members, one of which constitutes a-body member as at B adapted to be fixed to the spindle .S by means of a set screw 1 or otherwise, and, a relatively adjustable member as at B which is, threaded onto an extension of the body member B. The member B carries what may be termed a primary tool T in the form of a disc, while the member B carries a secondary or auxiliary tool T of the character hereinafter described.

The body B has a hub QwhichreceiVesthe set screw 1, and an enlarged conical, portion 3 with a finished face 4 transversely disposed relative to the axis of the spindleS, and is adapted to receive and hold a primary tool T which is in the form of an annulus ordisc of ring like character and is made of substantially thin sheet metal with the central opening 5 therein adapted to rest on an annular shoulder 6 of member B.

The inner side .of member B also has an extension 7 embracing the spindle S which is externally threaded at Sand adapted to receive the portion 9 of member Bf which is internally threaded at 10 to correspond to the threads 8 on body portion 7. Member B has an annular flangejll and an; annular shoulder 12 on the innerside thereof which is adapted to receive the tool T". It will be observed that the tool T is substantially of the same diameter and thickness as the tool T and is in the form of an annulus, with the central opening therein fitting over, the shoulder 12 of member B as shown in Fig. 1. Said shoulder is substantially longer than the thickness of the-tool Tand is adapted to receive and hold a resilient gasket 13 of' rubb'er or the like so thatthe tool T may yield longitudinally of the member B! Member T is fixedly held on the member B by means" of a pliirality' oft screws 16", 16-, etc., and member B'has a pin 17 which is suitably secured to the conical portion- 3 thereof'and projects outwardly in a plane parallel with the axis of the spindle S and is adapted to extend through an aperture 18 in the tool T. Thus, the member is held on and for rotation with the spindle S while. the member B is threaded onto the member B so as to afford a proper spacing of the tools T and T and amplead justment to accommodate any thickness of welt;

Member B is moved into operative position on the member B by turning the knurled portion 9 ofmember B until the end of the pin 17 of member B seats inthe aperture 18' of the tool T, thereafter a further movement of' the; member B on member B, in the direction of the tool T, will" serve to advance the tool T relative to tool' T by the pin 1-7, and prevent the rotation of tool T" and thus serves to hold the members T' and T in operative position. When the pin 17 is seated in the: aperture 18, the member B may be turned on the member B without turning the tool T, until the proper adjustment of'menr bers T and T is attained.

Now, the members T' and Tf" are formed of thin sheet metal such as cold roll steel, and are stamped" into the form shown and are adapted thereafter to becase hardened and tempered so' as to afford l'ong lif'e and reduce the wear to a minimum, but when the tools have become worn from use so as to impair their efficiency, they may be readily replaced by removing the screws 15 and 16 therefrom, and other similar tools attached to the members B and B in their place.

Attention is called to the peculiarly formed portions 19, 19, etc-., on the inner face of the member T, and the portions 20, 20, etc., on the adjacent face of the member T. These portions are formed in the stamping operation by making indentations in the flat discs so that correspondingly formed projections will be provided on the operating sides of the tools. The portions 19, 19, etc., of the tool T, as shownin Figs. 2 and 4, are arranged in two series so that the alternate projections are on circles of different diameter, and the edges 6, 6, etc., of the portions 19 are tangentially arranged, as indicated in Fig. 2,- relative to a common circleconcentric withthe axis of the disc,

and the edges 6, 6, etc., of the portions 19, 1-9; etfc., project-outwardly; from theyoperatingface fof thetool T, as clearly shown in Fig. 1, while the rear portions of the pro jections19 taper downwardly as shown.

' The portions 20, 20, etc., of the tool T are formed-by making elongated indentations of semi-circular cross section as shown in Figs. 3 and: 5, with the ends 6 thereof projecting outwardly from the operating face f of the tool, and cut at angles which are in tangential planes arranged in a concentric circle relative to the disc, as shown in Figs 3, and the portions 20, 2O taper downwardly and rearwardly from the edges 6" and are formed also tangentially in two series. on spaced concentric circles, as shown in- Fig. 3. l/Vhen the tools T and T are in operating position on the spindle S, it will: be observed by reference to Figs. 1 and 2 that the edges 6 of the projections 19 on tool- T are substantially parallel to the edges 6" of the projections 20 on tool T, so that the projections 19'on the innermost circle will register with the projections 20 on the outermost circle, and vice versa. It will also be noted by reference to Fig. 2- that the edges 6 and e of the projections 19 and 20 respectively'f'ace each other when the toolsare in operative position, and that the edges 0" of pro jections 20 on the outermost circle of tool T are substantially spaced from the edges -e of the outermost circle of projections 19- of tool T, while the projections 20 on the innermost circle are correspondingly spaced from the projections 19 on the innermost circle.

This particular arrangement of the members T and T has been found in practice to afford the best results for the reason that when the edge of the welt is. held between the tools T and T, when said tools have been adjusted to the thickness of a particular welt. For instance, assuming that the tool rotates in a counterclockwise direction, as indicated in Fig. 2, the projections 20 would engage the edge of the welt prior to the engagement of the projections 19 therewith, and the inclination of the projections 20 will serve to press the welt inwardly against the oncoming edges@ of the projections 19 on the opposite tool T.

It will be understood that in a welt refinishing operation the old soles are cut away from the welt and the threads remain in the stitch holes of the welt, so that when the loops on the same side of the welt and the cut ends on the opposite side, the welt the welt free from the stitches and in readiness for the application of a new sole by the employment of the same holes through which the original stitches were made.

This operation greatly reduces the cost in a refinishing operation and positively prevents the impairment of the welt by eliminating the necessity for piercing the welt for the new stitches. The operation also eliminates the necessity for manually removing the old stitches from the welt.

It will be understood in the consideration of this invention that the tools T and T are not in any sense cutting tools, and the edges 6 and e of the projections 19 and 20 respectively are not cutting edges, in fact they are blunt edges and so arranged at angles and tangents that they will not abrade or wear the welt, but will merely serve to: displace the old stitches therefrom and prepare the welt for the reception of a new sole. i

The resilient gasket 13 which is held in the rear of the tool T renders the tool T sufficiently yieldable relative to the tool T so that the welt will not be impaired or abraded during the stitch removing operation, but holds the tool T sufficiently firm so as to slightly bend the welt locally as the projections 19 are advanced thereby in succession.

What I claim is:

1. A stitch removing tool for welts and the like comprising a spindle, a pairof separable body members mounted V on said spindle, a primary tool detachably attached to one of said body members, an auxiliary tool loosely supported on said other body member and fixed for rotation with said primary tool, the adjacent faces of said tools having a plurality of stitch removing projections arranged so that the projections on one tool will be staggered with respect to the projections on the other tool.

2. A stitch removing tool for welts and the like comprising a spindle, a pair of separable body members mounted on said spindle, a primary tool fixedly held on one of said body members, an auxiliary tool loosely supported on said other body member and fixed-for rotation with said primary tool, the adjacent faces of said tools having a plurality of stitch removing projections arranged so that the projections on one tool will. be staggered with respect to the projections on the other tool, one of said tools being resiliently pressed toward the other tool.

3. A stitch removing tool for welts and the like comprising a spindle, a pair of sepa rable body members mounted on said spindle, a primary tool fixedly held on one of said body members, an auxiliary tool loosely supported on said other body member and fixed for rotation with said primary tool, the adjacent faces of said tools having a plurality of stitch removing projections arranged so that the projections on one tool will be staggered with respect to the projections on the other tool, one of said tools being fixed in its position on said spindle, and'the other tool being adjustable thereon, and means for yieldably pressing the adjustable tool toward the fixedtool.

4. In a device of the character described a tool of annular character formed of sheet metal, and provided with a series of'projections on the operating face thereof having work engaging edges extended beyond the face of the tool, and arranged in tangential planes with respect to a circle concentric with the axis of the tool. v

5. In' a device of the character described a tool of annular character formed of thin sheet metal and having a plurality of projections on the operating side thereof,vthe alternate projections being on circles of different diameter, and the work engaging portions of said projections being tangentially disposed with respect to circles concentric with the axis of the tool.

6. In a device of the character described a rotatable supporting member, an annular tool supported thereon and having a plurality of projections fromthe face thereof with work engaging portions formed tangentially with respect to a circle concentric with the axis of the tool, and arranged in two series on circles of different diameter, a relatively adjustable supporting member, an auxiliary tool thereon having a plurality of projections arranged in two series on circles of difierent diameter and having work engaging portions also disposed tangentiallywith respect to a circle concentric with the axis of said tool, and means for supporting said tools for rotation together so that the projections on one of the tools will be staggered with respect to the projections on the other of the tools;

7. In a device of the character described a spindle, a'body member fixed for rotation with said spindle, an annular tool removably held thereon, said tool being provided with a plurality of projections correspondingly formed and extended from the face thereof, an adjustable support threaded onto said body, an auxiliary tool loosely heldthereon and adapted to be stationarily held with respect to said other tool, and having a plurality of projections from the face thereof with work engaging portions spaced from the work engagingportions on the projections on said other tool, a resilient ring on the rear side of said adjustable tool, and a retaining ring on the front side thereof, whereby said tool may be removably held in position.

8. A stitch removing tool, comprising a disk and a plurality of hollow projections the periphery of the disk, the open sides of said,- projections lying in planes inclined to i the diameters of the disk.

1 1. A stitch removing tool, comprising a disk and a plurality of hollow projections open at one side positioned in circular arrangement spaced apart and from the periphery of the disk, the open sides of said projections being inclined at an angle to the diameters of the disk which pass through their outer points.

12. Astitch removing tool, comprising a sheet metal disk provided on one face with a plurality of hollow projections struck up from the disk and open at one side, said projections being radially arranged and spacedfrom the periphery of the disk, the open; sides of the projections being inclined to the axis of the disk.

13. A 'stitch removing tool. comprising a K body member; a disk detachably attached to the said body! member; and a second adjustable disk attached to said body member opposite the first disk; one of said disks being a stitch; removing disk, and the other adapted to hold the welts in contact there- With;

14. A stitch removing tool comprising a body member; a stitchremoving disk detachably attached to the said body member: an adjustable member detachably mounted on said body member; and a second disk mounted on the body member opposite the first disk and means to yieldingly press the second disk toward the first disk.

15-. In a stitch removing tool for welts and the like, comprising a body member; an

second disk; opposite the first disk, means.

for yieldably retaining the second-disk in position by said; adjustable member, and-said seconddisk being adapted tohold the Welts in contact with the firstdisk,

16. A stitch remover comprising a body member adapted to be attached to a; spindle and having. athreaded extension on one end, an adjustable member dctachablyengagin-g said; threaded member; a removable disk having a plurality of hollow projections located in circular arrangement, saidi hollow projections being open at one side, forming stitch removing teeth; and an opposed disk adapted to press the welt against the proj ections on the ot-l-ier disk and yieldably 0onfinedon the extension by the said adjustable member.

17. A stitch remover. comprising; a body memberadapted to be attached to. aspindle and having a threaded extension on one end; and an adjustable member detachably engaging said threaded member; a stitch removing tool comprising a disk having a plurality of hollow projections formedion the disk and} locatedin circulararrangement, said hollow projections being open at one side, forming stitch removiaig. teeth; and a second annular disk, yieldably confinedon the extension by the said! adjustable memher and adapted to press the Welt against the projections on the other disk said second disk having projections on; its face opposite the stitch removing disk adapted to press the welt against the projections on the other disk.

18. A stitch removing tool comprising a body member; a disk detachably attached to the said body member; an adjustable member detachably attached to said body member, and a second disk opposite and yieldingly pressed toward the first disk by said adjustable member; one of said disks being a stitch removing disk, and the other disk being adapted to hold the welts in contact therewith.

19. A stitch removing tool comprising a body member having a stitch removing disk attached thereto; and an adjustable disk mounted on said body member opposite the first disk and means yieldingly' pressing the adjustable disk toward the first disk.

PAUL A. WARD. Witnesses LUTHER L. MAoK,

IRENE BREEN. 

